import numpy as np
import matplotlib.pyplot as plt
np.seterr(divide='ignore',invalid='ignore')

def f1(x):
    return x/(np.exp(x) - 1)

def f2(x):
    return (np.exp(x) + 1)/x

x = np.linspace(0,1,200)

plt.plot(x, f1(x), label='cond_f')
plt.plot(x, f2(x), label='cond_A')

plt.legend()
plt.savefig("9c.png")
